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Base station apparatus, terminal apparatus, and method

a technology of base station and terminal, applied in the field of base station apparatus, terminal apparatus, and method, can solve the problem of reducing frequency efficiency and achieve the effect of effectively reducing interferen

Active Publication Date: 2021-10-26
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention helps to reduce interference in a radio environment where there are many signals.

Problems solved by technology

However, in such a cellular composition, a terminal apparatus (a mobile station apparatus, a reception station, a reception point, an uplink transmission apparatus, a downlink reception apparatus, a mobile terminal, a receive antenna group, a receive antenna port group, or user equipment (UE)) in a cell edge region or a sector edge region receives interference from a transmit signal of a base station apparatus constituting another cell or another sector (inter-cell interference or inter-sector interference), thereby posing a problem in that frequency efficiency is decreased.

Method used

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  • Base station apparatus, terminal apparatus, and method
  • Base station apparatus, terminal apparatus, and method
  • Base station apparatus, terminal apparatus, and method

Examples

Experimental program
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Embodiment Construction

[0018]A communication system in the present embodiment includes a base station apparatus (a transmission apparatus, a cell, a transmission point, a transmit antenna group, a transmit antenna port group, a component carrier, or an eNodeB) and a terminal apparatus (a terminal, a mobile terminal, a reception point, a reception terminal, a reception apparatus, a receive antenna group, a receive antenna port group, or UE).

[0019]In the present embodiment, “X / Y” includes the meaning of “X or Y”. In the present embodiment, “X / Y” includes the meaning of “X and Y”. In the present embodiment, “X / Y” includes the meaning of “X and / or Y”.

[0020]FIG. 1 is a diagram illustrating an example of the communication system according to the present embodiment. As illustrated in FIG. 1, the communication system in the present embodiment includes base station apparatuses 1A and 1B and terminal apparatuses 2A, 2B, and 2C. A coverage 1-1 is an area (communication area) in which the base station apparatus 1A ca...

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Abstract

A terminal apparatus is a terminal apparatus that communicates with a base station apparatus and includes a reception unit that receives NAICS assistance information from the base station apparatus. The NAICS assistance information includes assistance information used by the terminal apparatus in order to cancel or suppress interference of an neighbor cell and includes information related to power of a downlink shared channel used by the base station apparatus. The assistance information includes information related to a physical cell ID, information related to the number of antenna ports for a cell-specific reference signal, information related to an MBSFN subframe, a transmission mode, information related to a power ratio of the downlink shared channel between OFDM symbols, and information related to a power ratio of the cell-specific reference signal and the downlink shared channel.

Description

TECHNICAL FIELD[0001]The present invention relates to a base station apparatus, a terminal apparatus, and a method.BACKGROUND ART[0002]In a communication system such as long term evolution (LTE) and LTE-advanced (LTE-A) by Third Generation Partnership Project (3GPP) or worldwide interoperability for microwave access (WiMAX), a communication area can be enlarged by using a cellular composition in which a plurality of areas covered by a base station apparatus (a base station, a transmission station, a transmission point, a downlink transmission apparatus, an uplink reception apparatus, a transmit antenna group, a transmit antenna port group, a component carrier, or an eNodeB) or a transmission station corresponding to a base station apparatus is arranged in cells. In the cellular composition, frequency efficiency can be improved by using the same frequency between neighbor cells or sectors.[0003]However, in such a cellular composition, a terminal apparatus (a mobile station apparatus,...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04L12/00H04W4/06H04W24/02H04L5/00H04W72/00H04L12/18
CPCH04W4/06H04L5/0051H04W24/02H04W72/005H04L12/189H04W72/30
Inventor YAMADA, RYOTASHIMEZAWA, KAZUYUKI
Owner SHARP KK